40004892, Marlborough, 540, Head of Alexander with Ammon horns. Signed PICHLER., PICLER, Unknown, Boardman, J., Scarisbrick, D., Wagner C., Zwierlein-Diehl, E: The Marlborough Gems (2009), Story-Maskelyne, M.H.: The Marlborough Gems (1870), no. 540, Cameo, Sardonyx

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